Black Friday sale. The Steripen Adventurer Opti is $49.96 at Campmor.Email ad says it includes a solar charger, but the link leads to the purifier without charger.http://www.campmor.com/steripen-adventurer-opti-water-purifier.shtml?cm_cat=TRAILMAIL&cm_ite=TrailMail-November252011&cm_pla=46745&cm_ven=EMAIL